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<h4 id="2．使用rundll32-exe安装这个恶意代码后，发生了什么"><a href="#2．使用rundll32-exe安装这个恶意代码后，发生了什么" class="headerlink" title="2．使用rundll32.exe安装这个恶意代码后，发生了什么?"></a>2．使用rundll32.exe安装这个恶意代码后，发生了什么?</h4><p>1.它往注册表’<strong>SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows</strong>‘下”<strong>AppInit_DLLs</strong>“值写入数据”<strong>spoolvxx32.dll</strong>“,不过我是在win10上测试的被拒绝访问了.</p>
<p>2.失败原因是因为没有用管理员权限.</p>
<p>3.试图打开**%SystemRoot%\system32<strong>目录下</strong>Lab11-02.ini**文件但是没有找到.</p>
<h4 id="3-为了使这个恶意代码正确安装，Lab11-02-ini必须放置在何处"><a href="#3-为了使这个恶意代码正确安装，Lab11-02-ini必须放置在何处" class="headerlink" title="3.为了使这个恶意代码正确安装，Lab11-02.ini必须放置在何处?"></a>3.为了使这个恶意代码正确安装，Lab11-02.ini必须放置在何处?</h4><p>1.需要正常安装ini必须放在**%SystemRoot%\system32**目录下.</p>
<h4 id="4．这个安装的恶意代码如何驻留"><a href="#4．这个安装的恶意代码如何驻留" class="headerlink" title="4．这个安装的恶意代码如何驻留?"></a>4．这个安装的恶意代码如何驻留?</h4><p>1.通过修改注册表’<strong>SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows</strong>‘下”<strong>AppInit_DLLs</strong>“值写入数据”<strong>spoolvxx32.dll</strong>“.</p>
<p>2.之后将自己写入**%SystemRoot%\system32**下,重命名”<strong>spoolvxx32.dll</strong>“,这样就会调用user32.dll的时候就会一同加载.</p>
<h4 id="5．这个恶意代码采用的用户态Rootkit技术是什么"><a href="#5．这个恶意代码采用的用户态Rootkit技术是什么" class="headerlink" title="5．这个恶意代码采用的用户态Rootkit技术是什么?"></a>5．这个恶意代码采用的用户态Rootkit技术是什么?</h4><p>使用了InlineHook挂钩了Send函数.</p>
<h4 id="6-挂钩代码做了什么"><a href="#6-挂钩代码做了什么" class="headerlink" title="6.挂钩代码做了什么?"></a>6.挂钩代码做了什么?</h4><p>1.劫持了Send函数,如果发送的数据中包含字符串”RCPT TO:”,就提前发送一个数据包如下:</p>
<p>“RCPT TO: &lt;<a href="mailto:&#98;&#x69;&#x6c;&#108;&#121;&#64;&#109;&#97;&#108;&#x77;&#x61;&#114;&#101;&#97;&#110;&#x61;&#x6c;&#121;&#x73;&#105;&#115;&#x62;&#111;&#111;&#107;&#x2e;&#x63;&#x6f;&#109;">&#98;&#x69;&#x6c;&#108;&#121;&#64;&#109;&#97;&#108;&#x77;&#x61;&#114;&#101;&#97;&#110;&#x61;&#x6c;&#121;&#x73;&#105;&#115;&#x62;&#111;&#111;&#107;&#x2e;&#x63;&#x6f;&#109;</a>&gt;“是一种SMTP协议的劫持.</p>
<h4 id="7．哪个或者哪些进程执行这个恶意攻击，为什么"><a href="#7．哪个或者哪些进程执行这个恶意攻击，为什么" class="headerlink" title="7．哪个或者哪些进程执行这个恶意攻击，为什么?"></a>7．哪个或者哪些进程执行这个恶意攻击，为什么?</h4><p>以下三种进程会执行恶意攻击:”THEBAT.EXE”,”OUTLOOK.EXE”,”MSIMN.EXE”,因为这些是属于邮箱软件.</p>
<h4 id="8-ini文件的意义是什么"><a href="#8-ini文件的意义是什么" class="headerlink" title="8. .ini文件的意义是什么?"></a>8. .ini文件的意义是什么?</h4><p>1.记录一些数据的,在本次实验中记录了是一段加了密的字符串,通过sub_100010B3处函数进行解密.解密后为”<a href="mailto:&#x62;&#x69;&#108;&#108;&#x79;&#x40;&#109;&#x61;&#108;&#x77;&#97;&#x72;&#x65;&#97;&#110;&#x61;&#x6c;&#121;&#x73;&#105;&#115;&#98;&#111;&#x6f;&#107;&#46;&#x63;&#111;&#x6d;">&#x62;&#x69;&#108;&#108;&#x79;&#x40;&#109;&#x61;&#108;&#x77;&#97;&#x72;&#x65;&#97;&#110;&#x61;&#x6c;&#121;&#x73;&#105;&#115;&#98;&#111;&#x6f;&#107;&#46;&#x63;&#111;&#x6d;</a>“.</p>
<h4 id="9．你怎样用-Wireshark动态抓获这个恶意代码的行为"><a href="#9．你怎样用-Wireshark动态抓获这个恶意代码的行为" class="headerlink" title="9．你怎样用 Wireshark动态抓获这个恶意代码的行为?"></a>9．你怎样用 Wireshark动态抓获这个恶意代码的行为?</h4><p>1.你要先执行导出函数<strong>installer</strong>进行安装.</p>
<p>2.运行指定进程.</p>
<p>3.打开wireshark过滤添加SMTP.</p>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="https://xiaoqian2000.gitee.io/blogs">小乾</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="https://xiaoqian2000.gitee.io/blogs/2023/08/01/%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E5%AE%9E%E6%88%98%E5%88%86%E6%9E%90Lab%2011-2/">https://xiaoqian2000.gitee.io/blogs/2023/08/01/%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E5%AE%9E%E6%88%98%E5%88%86%E6%9E%90Lab%2011-2/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="https://xiaoqian2000.gitee.io/blogs" target="_blank">学海无涯苦作舟</a>！</span></div></div><div class="tag_share"><div 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title="恶意代码实战分析10.2"><div class="cover" style="background: var(--default-bg-color)"></div><div class="pagination-info"><div class="label">下一篇</div><div class="next_info">恶意代码实战分析10.2</div></div></a></div></nav></div><div class="aside-content" id="aside-content"><div class="card-widget card-info"><div class="is-center"><div class="avatar-img"><img src="/blogs/img/headpicture.png" onerror="this.onerror=null;this.src='/blogs/img/friend_404.gif'" alt="avatar"/></div><div class="author-info__name">小乾</div><div class="author-info__description"></div></div><div class="card-info-data site-data is-center"><a href="/blogs/archives/"><div class="headline">文章</div><div class="length-num">27</div></a><a href="/blogs/tags/"><div class="headline">标签</div><div class="length-num">0</div></a><a href="/blogs/categories/"><div class="headline">分类</div><div class="length-num">3</div></a></div><a id="card-info-btn" target="_blank" rel="noopener" href="https://gitee.com/xiaoqian2000"><i class="fab 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class="toc-number">1.1.</span> <span class="toc-text">分析恶意代码Lab11-02.dll。假设一个名为Lab11-O2.ini的可疑文件与这个恶意代码一同被发现。</span></a></li></ol></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E9%97%AE%E9%A2%98"><span class="toc-number">2.</span> <span class="toc-text">问题</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#1%EF%BC%8E%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8FDLL%E5%AF%BC%E5%87%BA%E4%BA%86%E4%BB%80%E4%B9%88"><span class="toc-number">2.1.</span> <span class="toc-text">1．这个恶意DLL导出了什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#2%EF%BC%8E%E4%BD%BF%E7%94%A8rundll32-exe%E5%AE%89%E8%A3%85%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E5%90%8E%EF%BC%8C%E5%8F%91%E7%94%9F%E4%BA%86%E4%BB%80%E4%B9%88"><span class="toc-number">2.2.</span> <span class="toc-text">2．使用rundll32.exe安装这个恶意代码后，发生了什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#3-%E4%B8%BA%E4%BA%86%E4%BD%BF%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E6%AD%A3%E7%A1%AE%E5%AE%89%E8%A3%85%EF%BC%8CLab11-02-ini%E5%BF%85%E9%A1%BB%E6%94%BE%E7%BD%AE%E5%9C%A8%E4%BD%95%E5%A4%84"><span class="toc-number">2.3.</span> <span class="toc-text">3.为了使这个恶意代码正确安装，Lab11-02.ini必须放置在何处?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#4%EF%BC%8E%E8%BF%99%E4%B8%AA%E5%AE%89%E8%A3%85%E7%9A%84%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E5%A6%82%E4%BD%95%E9%A9%BB%E7%95%99"><span class="toc-number">2.4.</span> <span class="toc-text">4．这个安装的恶意代码如何驻留?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#5%EF%BC%8E%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E9%87%87%E7%94%A8%E7%9A%84%E7%94%A8%E6%88%B7%E6%80%81Rootkit%E6%8A%80%E6%9C%AF%E6%98%AF%E4%BB%80%E4%B9%88"><span class="toc-number">2.5.</span> <span class="toc-text">5．这个恶意代码采用的用户态Rootkit技术是什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#6-%E6%8C%82%E9%92%A9%E4%BB%A3%E7%A0%81%E5%81%9A%E4%BA%86%E4%BB%80%E4%B9%88"><span class="toc-number">2.6.</span> <span class="toc-text">6.挂钩代码做了什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#7%EF%BC%8E%E5%93%AA%E4%B8%AA%E6%88%96%E8%80%85%E5%93%AA%E4%BA%9B%E8%BF%9B%E7%A8%8B%E6%89%A7%E8%A1%8C%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8F%E6%94%BB%E5%87%BB%EF%BC%8C%E4%B8%BA%E4%BB%80%E4%B9%88"><span class="toc-number">2.7.</span> <span class="toc-text">7．哪个或者哪些进程执行这个恶意攻击，为什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#8-ini%E6%96%87%E4%BB%B6%E7%9A%84%E6%84%8F%E4%B9%89%E6%98%AF%E4%BB%80%E4%B9%88"><span class="toc-number">2.8.</span> <span class="toc-text">8. .ini文件的意义是什么?</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#9%EF%BC%8E%E4%BD%A0%E6%80%8E%E6%A0%B7%E7%94%A8-Wireshark%E5%8A%A8%E6%80%81%E6%8A%93%E8%8E%B7%E8%BF%99%E4%B8%AA%E6%81%B6%E6%84%8F%E4%BB%A3%E7%A0%81%E7%9A%84%E8%A1%8C%E4%B8%BA"><span class="toc-number">2.9.</span> <span class="toc-text">9．你怎样用 Wireshark动态抓获这个恶意代码的行为?</span></a></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item no-cover"><div class="content"><a class="title" href="/blogs/2023/08/20/Window10%20SwapContext%E5%88%86%E6%9E%90/" title="Win10 X64 1904 线程交换SwapContext分析">Win10 X64 1904 线程交换SwapContext分析</a><time datetime="2023-08-20T13:21:52.000Z" title="发表于 2023-08-20 21:21:52">2023-08-20</time></div></div><div class="aside-list-item no-cover"><div class="content"><a class="title" href="/blogs/2023/08/20/win10%20%E7%B3%BB%E7%BB%9F%E8%B0%83%E7%94%A8/" title="Win10 X64 1904 系统调用">Win10 X64 1904 系统调用</a><time datetime="2023-08-20T13:21:52.000Z" title="发表于 2023-08-20 21:21:52">2023-08-20</time></div></div><div class="aside-list-item no-cover"><div class="content"><a class="title" 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